Safety data sheet
According to EC Directive 91/155/EEC
MERCK
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1. Identification of the substance/preparation and of the company/undertaking
Identification of the product
Catalogue No.: 159230
Product name: Potassium nitrate Reag. Ph Eur

Manufacturer/supplier identification
Company: Merck Ltd.
9th Floor, Monterey Tower, 2170 New Petchburi Road, Bangkapi, Huaykwang, Bangkok 10320
Tel: (662) 308 - 0218

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2. Composition/information on ingredients
Synonyms
Nitric acid potassium salt

CAS-No.: 7757-79-1 EC-Index-No.: -
Molar mass: 101.11 EINECS-No.: 231-818-8
Molecular formula: KNO3

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3. Hazards identification
Contact with combustible material may cause fire.

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4. First aid measures
After inhalation: fresh air.
After skin contact: wash off with plenty of water. Remove contaminated clothing.
After eye contact: rinse out with plenty of water with the eyelid held wide open. Summon eye specialist.
After swallowing: make victim drink plenty of water, induce vomiting, summon doctor.

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5. Fire-fighting measures
Suitable extinguishing media:
water

Special risks:
Non-combustible. Fire-promoting. Keep away from combustible materials. Development of hazardous combustion gases or vapours possible in the event of fire. Contain escaping vapours with water. The following may develop in event of fire: nitrous gases

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6. Accidental release measures
Procedures for cleaning / absorption:
Take up dry. Forward for disposal. Clean up affected area.

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7. Handling and storage
Handling:
No further requirements.

Storage:
Away from combustible substances. Keep away from sources of ignition and heat.

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8. Exposure controls/personal protection
Personal protective equipment:
Respiratory protection: required when dusts are generated.
Eye protection: required
Hand protection: required
Industrial hygiene: Change contaminated clothing. Application of skin- protective barrier cream recommended. Wash hands after working with substance.

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9. Physical and chemical properties
Form: solid
Colour: white
Odour: odourless
pH value
at 50 g/l water (20 °C) 5.5 - 8.0
Melting temperature 334 °C
Boiling temperature not available
Ignition temperature not available
Flash point not available
Explosion limits lower not available
upper not available
Density (20 °C) 2.11 g/cm3
Solubility in water (20 °C) 320 g/l
water (100 °C) 2470 g/l
Thermal decomposition > 400 °C

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10. Stability and reactivity
Conditions to be avoided
no information available

Substances to be avoided
increased reactivity with metals in powder form , combustible substances , organic substances , sulfides , boron ( heat ) , carbon , sulfur / carbon , phosphides , phosphorus , sulfur , magnesium (risk of explosion!)

Hazardous decomposition products
nitrous gases

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11. Toxicological information
Acute toxicity
LD50 (oral, rat): 2000 mg/kg

Further toxicological information
Very low acute toxicity in animal experiments.
After eye contact: Irritations.
After swallowing: mucosal irritations , nausea , vomiting , diarrhoea After absorption of large quantities: Methaemoglobinaemia with headache, cardiac arrhythmia, drop in blood pressure, dyspnoea, and spasms, key symptom: cyanosis (blue colouration of the blood).

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12. Ecological information
Ecotoxic effects:
Toxic for aquatic organisms. Plancton EC0: 200 mg/l ; Daphnia magna LC50: 490 mg/l /24 h ; Daphnia magna LC50: 226 mg/l /72 h ; Daphnia magna LC50: 39 mg/l /96 h
Depending on the concentration, phosphorus and/or nitrogen compounds may contribute to the eutrophication of drinking- water supplies.
Further ecologic data:
Do not allow to enter waters, waste water, or soil!
Hazard for drinking water supplies.

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13. Disposal considerations
Product:
There are no uniform EC Regulations for the disposal of chemicals or residues. Chemical residues generally count as special waste. The disposal of the latter is regulated in the EC member countries through corresponding laws and regulations. We recommend that you contact either the authorities in charge or approved waste disposal companies which will advise you on how to dispose of special waste.

Packaging:
Disposal in compliance with official regulations. Handle contaminated packaging in the same way as the substance itself. If not officially specified differently, non-contaminated packaging may be treated like household waste or recycled.

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14. Transport information
Transport over land ADR/RID and GGVS/GGVE (Germany)
GGVS/GGVE class: 5.1 Number and letter: 22c
ADR/RID class: 5.1 Number and letter: 22c
Name of material: 1486 KALIUMNITRAT

River transport ADN/ADNR
not examined

Sea transport IMDG
IMDG class: 5.1 UN-No.: 1486 Packaging group: III
Ems: 5.1-06 MFAG: 235
Correct technical name: POTASSIUM NITRATE

Air transport ICAO-TI and IATA-DGR
ICAO/IATA class: 5.1 UN/ID-No.: 1486 Packaging group: III
Correct technical name: POTASSIUM NITRATE

The transport regulations are cited according to international regulations and in the form applicable in Germany (GGVS/GGVE). Possible national deviations in other countries are not considered.

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15. Regulatory information
Labelling according to EC Directives
Symbol: O Oxidizing immediately and show this container or label.
R-phrases: R 8 Contact with combustible material may cause fire.
S-phrases: S 16-41 Keep away from sources of ignition - No smoking. In case of fire and/or explosion do not breathe fumes.
EC-No.: 231-818-8 EC label

German regulations
Water pollution class 1 (slightly polluting substance)

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16. Other information
Reason for alteration
General update.

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